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... Successful colonization and growth of trees within herbaceous communities may result from different interactions with the herbaceous community. First, colonizing trees compete against larger, established herbs, while subsequent growth occurs among similarly sized or smaller herbs. This shift from colonization to growth may lead three drivers of community dynamics—nutrients, consumers, and herbaceo ...
Southeastern UnitedStates, etc ; environmental management; forestry; forests; water quality; Show all 5 Subjects
Abstract:
... Numerous studies have concluded that forestry Best Management Practices (BMPs) are effective at mitigating erosion and sedimentation caused by forest operations; however, the complex relationship between forestry BMPs and erosion is largely unexamined. In this study, BMP implementation rates, which are percentages ranging from 0 to 100% that indicates how well an operator instituted recommended pr ...
Northeastern UnitedStates, etc ; agriculture; cognition; humans; social capital; Denmark; Show all 6 Subjects
Abstract:
... Farmers are key actors in the transition towards sustainable agricultural practices. Therefore, it is important to understand farmers’ motivations to encourage lasting change. This study investigated how farmers from the two different social contexts of the northeast US and Denmark perceive sustainability. Twenty farmers constructed Fuzzy Cognitive Maps to model their practices and perceived outco ...
Eastern UnitedStates, etc ; altitude; ozone; specific humidity; temperature profiles; Show all 5 Subjects
Abstract:
... Spatial functional regression methods allow researchers to model spatially dependent functional random variables, often using a kriging-based interpolation method. However, less effort has been devoted towards the goal of modeling the relationship between a scalar response and a functional covariate throughout a spatial domain. Here, we introduce a method to characterize this association by estima ...
UnitedStates Environmental Protection Agency; Eastern UnitedStates, etc ; Desmognathus; ambient water quality; aquatic organisms; chlorides; larvae; lethal concentration 50; pollution; stormwater; stormwater management; streams; toxicity; Show all 13 Subjects
Abstract:
... The application of road salt as a deicing agent is common, but investigations of potential negative effects of salt runoff on stream salamanders have been limited. Additionally, modern stormwater management practices should influence the delivery of salt ions to streams. We used data loggers in streams draining watersheds with and without stormwater management ponds and acute 96-h LC50 tests to in ...
UnitedStates Environmental Protection Agency, etc ; air; pollution; radon; research; risk; India; Show all 7 Subjects
Abstract:
... Radiological impact of radon in air is a global issue whereas radon in water has local consequences. Considering its importance, we have conducted a study on radon activity measurements in 316 tube-well water samples collected from Susunia hill area in Bankura district of West Bengal, India during the period of 25th December 2018–2nd February 2020. Radon contents are measured using AlphaGUARD rado ...
UnitedStates Environmental Protection Agency, etc ; affordability; compliance; computer security; lead; water utilities; Show all 6 Subjects
Abstract:
... In 2022, the US Environmental Protection Agency (EPA) is engaging in several regulatory activities that will affect the regulatory compliance of US water systems. Being familiar with the changes in regulations will help US water systems prepare for any changes they should make in their own operations. Areas being addressed this year by EPA include, among others, infrastructure, emerging contaminan ...
UnitedStates Environmental Protection Agency, etc ; analytical chemistry; chemoinformatics; ecotoxicology; instrumentation; mass spectrometry; Show all 6 Subjects
Abstract:
... Unknown chemical releases constitute a large portion of the rapid response situations to which the US Environmental Protection Agency is called on to respond. Workflows used to address unknown chemical releases currently involve screening for a large array of known compounds using many different targeted methods. When matches are not found, expert analytical chemistry knowledge is used to propose ...
UnitedStates Environmental Protection Agency, etc ; electric energy consumption; electricity; energy policy; paper; Show all 5 Subjects
Abstract:
... In the US a complete transition to electric vehicles (EVs) would increase demand for carbon-free electricity by around 30% if the future fleet has the same average size, weight and horsepower as current EVs. However, these dimensions for today's EVs are substantially lower than for conventional vehicles, so as EVs replace them, EV's average size, weight and horsepower are likely to increase substa ...
Northeastern UnitedStates, etc ; Bacillariophyceae; acid deposition; algae; climate; community structure; lakes; sulfates; Show all 8 Subjects
Abstract:
... We reconstructed historical diatom and algal pigment records from a clear-water versus a brown-water lake in the northeastern U.S. to compare ecological responses to reduced acid deposition in recent decades in the context of a 140-year record, during which time multiple external drivers influenced both lakes. In the clear-water lake, diatom community structure changed continually from the beginni ...
Shaheen Kurani; Kathy L. MacLaughlin; Robert M. Jacobson; Jennifer L. St. Sauver; Gregory D. Jenkins; Chun Fan; Debra J. Jacobson; Jonathan Inselman; Xuan Zhu; Joan M. Griffin; Lila J. Finney Rutten
Midwestern UnitedStates, etc ; Papillomaviridae; cohort studies; humans; probability; socioeconomic status; vaccination; vaccines; Show all 8 Subjects
Abstract:
... Despite availability of safe and effective human papillomavirus (HPV) vaccines, vaccination uptake remains low in the U.S. Research examining the impact of neighborhood socioeconomic status on HPV vaccination may help target interventions.To examine the association between area deprivation and HPV vaccine initiation and completion.Retrospective cohort study of individuals aged 11–18 years residing ...
Western UnitedStates, etc ; archaeology; coasts; models; occupations; palaeogeography; sea level; subduction; tectonics; viscoelasticity; Show all 10 Subjects
Abstract:
... Predictive modeling of submerged archaeological sites requires accurate sea-level predictions in order to reconstruct coastal paleogeography and associated geographic features that may have influenced the locations of occupation sites such as rivers and embayments. Earlier reconstructions of the paleogeography of parts of the western U.S. coast used an assumption of eustatic sea level, but this ne ...
UnitedStates Environmental Protection Agency, etc ; breathing; chloroform; human health; ingestion; research; risk; Egypt; Show all 8 Subjects
Abstract:
... The present study aims to assess the probable lifetime cancer and non-cancer risks of exposure to the trihalomethanes in Egypt's drinking water through ingestion, dermal contact, and inhalation. A total of 1667 drinking water samples were collected from twenty-three Egyptian governorates over a three-years period. The concentrations of total trihalomethanes ranged between 29.07 and 86.01 μg/L and ...
UnitedStates Agency for International Development, etc ; World Bank; social change; Ghana; Kenya; Nepal; Show all 6 Subjects
Abstract:
... Prize giving has grown exponentially, with agencies like the World Bank and USAID using them to help solve critical development challenges in low-income countries. This paper draws on findings from a DFID programme that has been experimenting with a suite of global prizes, including in Ghana, Kenya, and Nepal. The paper reflects on prizes used to deliver social change: where they work, why, and fo ...
Eastern UnitedStates; Western UnitedStates, etc ; Mercurialis; Pachybrachis; conservation areas; redescriptions; Show all 6 Subjects
Abstract:
... An effort to identify a series of Pachybrachis Chevrolat, 1836 specimens from an eastern USA nature preserve led to the study of five western USA species: Pachybrachis alticola Fall, Pachybrachis conspirator Fall, Pachybrachis laevis Bowditch, Pachybrachis mercurialis Fall, and Pachybrachis nubilus Bowditch. Pachybrachis mercurialis is synonymized under P. laevis (new synonymy), and P. conspirator ...
UnitedStates Environmental Protection Agency, etc ; Pimephales promelas; adulthood; carbaryl; mortality; reproductive performance; risk; toxicity; Show all 8 Subjects
Abstract:
... The US Environmental Protection Agency conducts ecological risk assessments with a battery of fish toxicity tests that include acute, early life stage, and reproduction tests. While endpoints in these tests (survival, growth and reproduction) are conceptually related, because they are measured in separate exposures, the quantitative relationships between them are difficult to determine and largely ...
UnitedStates Environmental Protection Agency, etc ; aerodynamics; aerosols; air quality; environment; lidar; motivation; particulates; wildfires; Show all 9 Subjects
Abstract:
... Using twelve years (2007–2018) of NASA Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) near-surface 532 nm aerosol extinction retrievals, multi-year mean and trends of particulate matter (PM) concentrations are derived over the contiguous United States (CONUS). Different from past studies that use column integrated aerosol optical thickness, here only near-surface CALIOP aerosol extincti ...
Southeastern UnitedStates, etc ; coal; combustion; environment; estuaries; marshes; organic carbon; phytoplankton; pollution; risk; toxicity; Show all 11 Subjects
Abstract:
... Hydrocarbons in estuarine sediments provide information on sources of sedimentary organic matter (OM), and they are thus useful for tracing natural and anthropogenic OM inputs to the estuary. Here, we assessed the amounts, compositions and sources of natural and anthropogenic hydrocarbons from the sediments of a large, ecologically important estuary, Mobile Bay in Southeast USA. TOC/TN ratios and ...
UnitedStates Environmental Protection Agency, etc ; adsorption; environmental protection; human health; hydrophobicity; models; porosity; solvents; zeolites; Show all 9 Subjects
Abstract:
... 1-Bromopropane is a solvent used in various industrial and commercial applications. United States Environmental Protection Agency recently concluded that 1-bromopropane posed unreasonable risks to human health in several conditions of use. In this work, the adsorption of 1-bromopropane vapors in zeolites was investigated using molecular simulations. First, a united-atom model of 1-bromopropane was ...
UnitedStates Environmental Protection Agency, etc ; adsorbents; adsorption; carboxylation; carboxylic acids; mercury; oxygen; pH; zeta potential; Show all 9 Subjects
Abstract:
... Water supplies contaminated with heavy metals are a worldwide concern. MXenes have properties that make them attractive for the removal of metal ions from water. This work presents a simple one-step method of Ti₃C₂Tₓ carboxylation that involves the use of a chelating agent with a linear structure, providing strong carboxylic acid groups with high mobility. The carboxylation decreases the zeta-pote ...